import java.util.Scanner;
public class pattern14 {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
int row = (2 * n) - 1;
int nst = 1;
int val = 1;
int i = 1;
while (i <= row) {
for (int j = 1; j <= nst; j++) {
if (j % 2 == 0) {
System.out.print("*");
} else {
System.out.print(val);
}
}
System.out.println();
if (i <= row / 2) {
nst = nst + 2;
val++;
} else {
nst = nst - 2;
val--;
}
i++;
}
}
}